10 Profound Innovations Ahead

From Live Science:

Today's world looks increasingly like the future. Robots work factory assembly lines and fight alongside human warriors on the battlefield, while tiny computers assist in everything from driving cars to flying airplanes. Surgeons use the latest technological tools to accomplish incredible feats, and researchers push the frontiers of medicine with bioengineering. Science fiction stories about cloning and resurrecting extinct animals look increasingly like relevant cautionary tales.

Read more ....

Twitter Hit By 'Denial-Of-Service' Attack

From Wall Street Journal:

NEW YORK (Dow Jones)--Twitter Inc., the fast-growing microblogging service, was inaccessible Thursday morning, struck by a "denial-of-service" attack, the company said on its status blog.

"We are defending against a denial-of-service attack, and will update status again shortly," the company said in a post shortly before 11 a.m. EDT (1500 GMT) Thursday.

In an update to the blog post, Twitter said the site is back online, but that the company is "continuing to defend against and recover from this attack." The site will remain slow for users attempting to access it while Twitter attempts to recover.

Read more ....

Update: Facebook Confirms Problems, But Is It an Attack? -- PC Magazine

Less May Be More for Wind Turbines

Photo: Less to lift: Nordic Windpower’s N1000 wind turbines use two blades to generate up to 1,000 megawatts of power, making them cheaper to build than a conventional three-bladed machine. Credit: Nordic Windpower

From Technology Review:

Nordic Windpower's two-bladed rotors depart from conventional wind-power design.

One of the first R&D grants to a renewable-energy developer from the economic-stimulus funds approved by Congress this spring could have a dramatic impact on the design of wind turbines. The $16 million loan guarantee offered by the U.S. Department of Energy (DOE) to Berkeley, CA-based Nordic Windpower will accelerate commercialization of the company's Swedish-designed, two-bladed wind turbines, marking the first utility-scale alternative to the industry's dominant three-bladed design in over a decade.

Read more ....

Rural Well Water Linked to Parkinson's Disease

HEALTHY FIELDS, SICK WATER: Pesticides implicated in Parkinson's Disease are believed to travel from farms to humans via private wells. FLICKR/RWKVISUAL

From Scientific American:

California finding bolsters theory linking neurological ailment to insecticides.

Rural residents who drink water from private wells are much more likely to have Parkinson’s disease, a finding that bolsters theories that farm pesticides may be partially to blame, according to a new California study.

Nearly one million people in the United States--one of every 300--have the incurable neurological disease. Beginning with a slight tremor, Parkinson’s often progresses to severe muscle control problems that leave patients struggling to walk and talk.

Read more ....

The 10 Mysteries Of Human Behaviour That Science Can't Explain

Mood-improving endorphins are released when we laugh. Photo: GETTY

From The Telegraph:

Scientists have split the atom, put men on the moon and discovered the DNA of which we are made, but there are 10 key mysteries of human behaviour which they have failed to fully explain.

The New Scientist magazine compiled a list of the everyday aspects of life which continue to confound the world's greatest brains, including the reasons behind kissing, blushing and even picking your nose.

An editorial in the publication said: "There is nothing more fascinating to most of us than ourselves.

Read more ....

Wealthy Nations See Unexpected Baby Boom

From Cosmos:

PARIS: The ironclad axiom that the wealthier a nation the lower its birthrate may reverse when countries pass a certain threshold of development, reports a new study.

Most of the two dozen nations that have passed this tipping point – including Australia, Sweden, France, the United States and Britain – are enjoying modest baby booms, breaking a pattern of declining fertility that has held for decades if not longer.

Read more ....

Opinion: Do You Believe In Miracles?

Photo: Do miracles depend on definitions of the laws of nature? (Image: Carsten Koall / Getty)

From New Scientist:

THESE days most people think it unscientific to believe in "miracles", and irreligious not to believe in them. But would the occurrence of miracles really violate the principles of science? And would their non-occurrence really undermine religion? David Hume and Richard Dawkins have attempted to answer these questions in their different ways, but I am not convinced by their arguments, and for me they remain open questions.

In 1748, in one of his key essays, An Enquiry Concerning Human Understanding, the Scottish philosopher David Hume gave an account of the philosophy of miracles that impressed and influenced many thinkers. Hume defines a miracle as "a violation of the laws of nature...a transgression of a law of nature by a particular volition of the Deity, or by the interposition of some invisible agent".

Read more ....

How To Delay Doomsday In A Dying Solar System

From Space Daily:

With this essay by Ray Villard, news director for the Hubble Space Telescope, Astrobiology Magazine presents another in our series of 'Gedanken', or thought, experiments - musings by noted scientists on scientific mysteries in a series of "what if" scenarios. Gedanken experiments, which have been used for hundreds of years by scientists and philosophers to ponder thorny problems, rely on the power of one's imagination to project these scenarios to logical conclusions.

They do not involve lab equipment or, often, even experimental data. They can be thought of as focused daydreams. Yet, as in the famous case of Einstein's Gedanken experiments about what it would be like to hitch a ride on a light wave, they have often led to important scientific breakthroughs.

Read more ....

Another League Under the Sea: Tomorrow's Research Subs Open Earth's Final Frontier

Flying Low: The Deep Flight II sub uses stubby wings that propel it down like an airplane goes up. Nick Kaloterakis

From Popular Science:

Armed with better batteries and stronger materials, new submersibles aim to go deeper than ever before and open up the whole of the unexplored ocean to human eyes.

By liberal estimates, we’ve explored about 5 percent of the seas, and nearly all of that in the first 1,000 feet. That’s the familiar blue part, penetrated by sunlight, home to the colorful reefs and just about every fish you’ve ever seen. Beyond that is the deep—a pitch-black region that stretches down to roughly 35,800 feet, the bottom of the Marianas Trench. Nearly all the major oceanographic finds made in that region—hydrothermal vents and the rare life-forms that thrive in the extreme temperatures there, sponges that can treat tumors, thousands of new species, the Titanic—have occurred above 15,000 feet, the lower limit of the world’s handful of manned submersibles for most of the past 50 years.

Read more ....

Solar Industry: No Breakthroughs Needed

Photo: Cheaper solar: First Solar’s improvements in manufacturing photovoltaics have helped lead to big drops in cost. A worker at a First Solar factory in Frankfurt, Germany, moves one of the company's solar panels. Credit: First Solar

From Technology Review:

The solar industry says incremental advances have made transformational technologies unnecessary.

The federal government is behind the times when it comes to making decisions about advancing the solar industry, according to several solar-industry experts. This has led, they argue, to a misplaced emphasis on research into futuristic new technologies, rather than support for scaling up existing ones. That was the prevailing opinion at a symposium last week put together by the National Academies in Washington, DC, on the topic of scaling up the solar industry.

Read more ....

Computer Technology Brings 300million-Year-Old Spider Fossils Back To Life

A CT scan of Eophrynus, an ancient spider that lived 300 million years ago. Scientists used a computer technology to generate 3D images

From The Daily Mail:

Fossils of 300million-year-old spiders have been brought to life with computer technology.

Scientists used a CT scan to generate three dimensional images of two of the creatures, Cryptomartus hindi and Eophrynus prestivicii.

Both were around the size of a 50p piece and they lived during the Carboniferous period, before the age of the dinosaurs.

Read more ....

Brain Difference In Psychopaths Identified

Scientists have found differences in the brain which may provide a biological explanation for psychopathy. (Credit: iStockphoto/Hayden Bird)

From Science Daily:

ScienceDaily (Aug. 5, 2009) — Professor Declan Murphy and colleagues Dr Michael Craig and Dr Marco Catani from the Institute of Psychiatry at King's College London have found differences in the brain which may provide a biological explanation for psychopathy.

The research investigated the brain biology of psychopaths with convictions that included attempted murder, manslaughter, multiple rape with strangulation and false imprisonment. Using a powerful imaging technique (DT-MRI) the researchers have highlighted biological differences in the brain which may underpin these types of behaviour and provide a more comprehensive understanding of criminal psychopathy.

Read more ....

Experts Predict Quieter Atlantic Hurricane Season

This NOAA satellite image shows Hurricane Ike in 2008. Weather experts on Wednesday reduced the number of projected hurricanes in the north Atlantic this season to four, two of them major hurricanes with winds above 178 kilometers (111 miles) per hour.(AFP/NOAA/File)

From Yahoo News/AFP:

MIAMI (AFP) – Weather experts on Wednesday reduced the number of projected hurricanes in the north Atlantic this season to four, two of them major hurricanes with winds above 178 kilometers (111 miles) per hour.

After one of the calmest starts to the hurricane season in a decade, the experts from Colorado State University said the development of an El Nino effect in the Pacific had caused them to scale back their projections for the Atlantic.

Read more ....

Human Population Expanded During Late Stone Age, Genetic Evidence Shows

align="center"> Cave painting reproduction. (Credit: iStockphoto/Jose Ramirez)

From Science Daily:

ScienceDaily (Aug. 4, 2009) — Genetic evidence is revealing that human populations began to expand in size in Africa during the Late Stone Age approximately 40,000 years ago. A research team led by Michael F. Hammer (Arizona Research Laboratory's Division of Biotechnology at the University of Arizona) found that sub-Saharan populations increased in size well before the development of agriculture. This research supports the hypothesis that population growth played a significant role in the evolution of human cultures in the Late Pleistocene.

The team's findings are published in the online peer reviewed journal PLoS ONE on July 29.

Read more ....

Pneumonic Plague: Should We Worry?

From Live Science:

An outbreak of pneumonic plague in Ziketan, China has killed three people, leading officials to seal off the town, according to news reports that are getting a lot of play this week.

But what is the pneumonic plague, and how is it different from other types of plague?

Plague is caused by the bacteria Yersinia pestis and is a zoonotic disease, meaning it can be transmitted from animals (usually rodents) to people.

There are three types of plague. The bubonic plague is the most common form and is spread to people from flea bites. This type is thought to be responsible for the Black Death, the pandemic that killed millions of people in the 1300s.

Read more ....

New Technology Could Drill Deeper Into The Earth Than Ever Before

Ultra-Deep Drill G Myers

From Popular Science:

An adaptation of oil drills for deep water could bring scientists closer to the goal of drilling all the way through the earth's crust to the wonders beneath.

In 2005, we came the closest we ever had before to drilling into the mantle: the layer beneath the Earth's crust. Now, with new drilling technology adapted from the oil and gas industry, scientists might finally be ready to reach that holy grail of depth.

The International Ocean Drilling Project announced today that, with the help of a company called AGR Drilling Services, they have engineered a type of technology called Riserless Mud Recovery (RMR) for extremely deep drilling. RMR allows for a closed drilling system -- where the mud and drilling fluid are kept separate from surrounding seawater -- without the need for risers surrounding the drill to draw mud up to the surface. Althought it was originally designed as a shallow water drilling system for oil and gas collection, the IODP says their development has made RMR a good tool for drilling in deep water as well.

Read more ....

Strange New Air Force Facility Energizes Ionosphere, Fans Conspiracy Flames

From Wired Science:

Todd Pedersen had to hustle—the sky was scheduled to start glowing soon, and he didn't want to miss it. It was just before sunset, a cold February evening in deep-woods Alaska, and the broad-shouldered US Air Force physicist was scrambling across the snow in his orange down parka and fur-lined bomber hat. Grabbing cables and electronics, he rushed to assemble a jury-rigged telescope atop a crude wooden platform.

The rig wasn't much, just a pair of high-sensitivity cameras packed into a dorm-room refrigerator and pointed at a curved mirror reflecting a panoramic view of the sky. Pedersen had hoped to monitor the camera feed from a relatively warm bunkhouse nearby. But powdery snow two feet deep made it difficult to string cables back to the building.

Read more ....

Giant Particle Collider Struggles

Many of the magnets meant to whiz subatomic particles around the 17-mile underground Large Hadron Collider outside Geneva have mysteriously lost their ability to operate at high energies. Valerio Mezzanotti for The New York Times

From The New York Times:

The biggest, most expensive physics machine in the world is riddled with thousands of bad electrical connections.

Many of the magnets meant to whiz high-energy subatomic particles around a 17-mile underground racetrack have mysteriously lost their ability to operate at high energies.

Some physicists are deserting the European project, at least temporarily, to work at a smaller, rival machine across the ocean.

After 15 years and $9 billion, and a showy “switch-on” ceremony last September, the Large Hadron Collider, the giant particle accelerator outside Geneva, has to yet collide any particles at all.

But soon?

Read more ....

European Bison On 'Genetic Brink'

From The BBC:

Europe's largest mammal, the European bison, remains extremely vulnerable to extinction, despite long-standing efforts to save it, new research shows.

One of the two remaining wild herds of pure bred European bison is down to an effective population size of just 25.

That is despite the actual number of wild bison in the herd having steadily risen to around 800.

The effective population measures the bison's genetic diversity, and can help predict the animal's survival chances.

Read more ....

A More Efficient Spacecraft Engine

Photo: Ion power: NASA’s new ion-propulsion system is undergoing testing at the Jet Propulsion Laboratory in Pasadena, CA. Credit: NASA

From Technology Review:

NASA's new ion-propulsion system could be ready for launch as soon as 2013.

NASA engineers have finished testing a new ion-propulsion system for earth-orbiting and interplanetary spacecraft. The system is more powerful and fuel-efficient than its predecessors, enabling it to travel farther than ever before.

Ion propulsion works by electrically charging, or ionizing, a gas using power from solar panels and emitting the ionized gas to propel the spacecraft in the opposite direction. The concept was first developed over 50 years ago, and the first spacecraft to use the technology was Deep Space 1 (DS1) in 1998. Since then, one other spacecraft has used ion propulsion: the Dawn mission to the outer solar system, launched in 2007.

Read more ....

WHO Maintains 2 Bln Estimate For Likely H1N1 Cases

From Reuters:

* Rough estimate of likely H1N1 cases by end is 2 billion

* No precise estimate of current infections

* High proportion of southern hemisphere flu cases are H1N1

* WHO to update on vaccine efforts this week

* WHO names African expert as H1N1 chief

By Jonathan Lynn

GENEVA, Aug 4 (Reuters) - The World Health Organisation stuck on Tuesday to its statement that about two billion people could catch H1N1 influenza by the time the flu pandemic ends.

But the estimate comes with a big health warning: no one knows how many people so far have caught the new strain, known as swine flu, and the final number will never be known as many cases are so mild they may go unnoticed.

Read more ....

Has The Mystery Of The Mars 'Monolith' Been Solved?

How the experts see it: The original HiRISE satellite image supplied to Mail Online by the University of Arizona showing a close up of what appears to be a 'monolith' on Mars

From The Daily Mail:

An image of what appears to be a mysterious rocky monument on Mars has excited space junkies around the world.

The 'monolith', was snapped from 165miles away using a special high resolution camera on board the Mars Reconnaissance Orbiter.

After being published on the website Lunar Explorer Italia, it set tongues wagging with space buffs questioning whether there was once life on the Red Planet.

Read more ....

Love Songs Of Bowhead Whales: Whales Sings With 'More Than One Voice'

Bowhead whale. (Credit: Photo by John Jacobsen, University of Copenhagen)

From Science Daily:

ScienceDaily (Aug. 3, 2009) — It wasn’t that many years ago that the bowhead whale was written off as extinct in the waters around Greenland and especially in Disko Bay in northwest Greenland where University of Copenhagen has its Arctic Field Station.

But now the situation has changed and adult bowhead whales, which can grow up to 18 metres long and weigh 100 tons, have returned to the bay. This is probably because global warming has opened up the Northwest Passage, making it ice free at certain times of the year for the first time in 125,000 years. This gives bowhead whales from the northern Pacific a chance to reach Disko Bay and mate with the small local population.

Read more ....

8 Tools and Gadgets to Prepare Your Home For Any Disaster

(Illustration by Gabriel Silveira)

From Popular Mechanics:

For millions of Americans living along the Gulf and Atlantic coastlines, hurricane season is an annual call to arms, a six-month stretch from June through November spent watching the skies and the local news for signs of trouble. Other regions cope with the threat of wildfires, quakes and tornadoes—and blackouts can strike anywhere. While no season is safe from disruption, late summer seems particularly inviting to the demons of disaster. Here’s a step-by-step guide to preparing your home and family.

Read more ....

Launch Your Own Personal Satellite

TubeSat: My First Satellite

From Popular Science:

Ever wanted to launch your own satellite into low earth orbit, then track it on ham radio for a few weeks before it burns up on re-entry? Well, 52 years after the launch of Sputnik, you can. Interorbital Systems is offering YOU the chance (by the end of 2010) to send up a TubeSat Personal Satellite Kit for the low introductory price of just $8,000.

Read more ....

Do Computers Make Planes Less Or More Safe?

In this Sunday, June 14, 2009 file photo workers unload debris, belonging to crashed Air France flight AF447, from the Brazilian Navy's Constitution Frigate in the port of Recife, northeast of Brazi. (AP Photo)

From ABC News:

A Look at Whether Increased Automation Means that Planes Will be More Dangerous.

Ben Cave was starting to get bored. The Australian had been sitting in his seat for more than three hours, and he still had two hours left before the Qantas jet was scheduled to touch down in Perth.

The Airbus A330 was flying at a cruising altitude of 11,278 meters (37,000 feet). The calm of modern jet travel, accentuated by the monotonous drone of the engines, prevailed on board the aircraft. The flight attendants were clearing away the last of the lunch trays into their trolleys, some of the 303 passengers were waiting near the toilets, and others were passing the time with stretching exercises.

Read more ....

Domestic Dog Origins Challenged

Domestic dog origins challenged

From BBC News:

The suggestion that the domestic dog originated in East Asia has been challenged.

The huge genetic diversity of dogs found in East Asia had led many scientists to conclude that domestication began there.

But new research published in the journal PNAS shows the DNA of dogs in African villages is just as varied.

An international group of researchers analysed blood samples from dogs in Egypt, Uganda and Namibia.

Today's dogs are descended from Eurasian grey wolves, domesticated between 15,000 and 40,000 years ago.

Read more ....

Scientists Report Original Source Of Malaria

UCI's Francisco Ayala and colleagues report in a new study that malignant malaria originates from a parasite found in chimpanzees in equatorial Africa. (Credit: Daniel A. Anderson / University Communications)

From Science Daily:

ScienceDaily (Aug. 4, 2009) — Researchers have identified what they believe is the original source of malignant malaria: a parasite found in chimpanzees in equatorial Africa.

UC Irvine biologist Francisco Ayala and colleagues think the deadly parasite was transmitted to humans from chimpanzees perhaps as recently as 5,000 years ago – and possibly through a single mosquito, genetic analyses indicate. Previously, malaria's origin had been unclear.

Read more ....

Top 10 American Innovations

From Live Science:

With the recession seemingly on the wane, it is time to tap into that spirit of innovation that has always succeeded in moving America forward, President Obama said Aug. 1.

Pull up your bootstraps and invent stuff, in other words.

Historically, Americans have had no trouble leading the way in scientific and technological advancement, especially in the 20th century, and it's that leadership that has pulled the country out of tough economic times. Foster the innate potential with policies and education and this recession can be a thing of the past too, according to Obama.

Read more ....

After The Boom, Is Wikipedia Heading For Bust?

From New Scientist:

Wikipedia has rapidly become one of the most used reference sources in the world, but a new study shows that the website's explosive growth is tailing off and also suggests the community-created encyclopaedia has become less welcoming to new contributors.

Ed Chi and colleagues at the Palo Alto Research Center in California warn that the changes could compromise the encyclopaedia's quality in the long term.

"It's easy to say that Wikipedia will always be here," says Chi, a computer scientist. "This research shows that is not a given."

Read more ....

Living Near A Wind Farm Can Cause Heart Disease, Panic Attacks And Migraines

Turbines: Ministers want to see another 4,000 across the country, meanwhile new research shows living near wind farms could damage your health.

From The Daily Mail:

Living close to wind farms can lead to a greater risk of heart disease, panic attacks and migraines, according to a study.

The farms can cause 'wind turbine syndrome', the symptoms of which also include tinnitus, vertigo and sleep deprivation, research to be published later this year claims.

Dr Nina Pierpoint, a leading New York paediatrician, says her five-year study of people living near wind turbines in the U.S., Britain, Italy, Ireland and Canada has led her to believe that they can also trigger nightmares in children and stop their brains developing properly.

Read more ....

Trees Are 'Crucial Famine Food'

From The BBC:

Trees can serve as a vital "famine food" to keep drought-hit communities alive when all other food crops fail, according to campaigners.

Food insecurity is a routine fact of life for many of the world's poorest people, Miranda Spitteler, chief executive of Tree Aid told BBC News.

She said the West needed to recognize the important role trees could play in reducing the need for conventional aid.

She also called for support for a local tree-based solution to food shortages.

Read more ....

Scientists 'Grow Replacement Teeth In Mice'

From The Telegraph:

Scientists have managed to grow replacement teeth in mice from cells in a laboratory.

The team behind the research claim that it is a crucial step towards growing fully functioning "bioengineered" organs in the human body.

The scientists grew a tooth "germ", a seed-like piece of tissue which contains the cells and instructions necessary to form a tooth, which they then transplanted into the animal's jawbones.

Read more ....

Newly Discovered Faults Illuminate Earthquake Hazard Along San Andreas

Image: A seismic map of the Salton Sea area reveals the grid covered by the CHIRP instrument (green lines), faults (black lines) and bomb target sites (gray boxes). The red dots represent earthquakes that have taken place in the area since 1983. (Credit: Image courtesy of University of California - San Diego)

From Science Daily:

ScienceDaily (Aug. 3, 2009) — New research by a team of scientists from Scripps Institution of Oceanography at UC San Diego and the U.S. Geological Survey (USGS) offers new insight into the San Andreas Fault as it extends beneath Southern California's Salton Sea. The team discovered a series of prominent faults beneath the sea, which transfer motion away from the San Andreas Fault as it disappears beneath the Salton Sea. The study provides new understanding of the intricate earthquake faults system beneath the sea and what role it may play in the earthquake cycle along the southern San Andreas Fault.

Read more ....

5 Top Galactic Bodies Anyone Can See (With a Cheap Telescope)

The Great Nebula in Orion (Messier 42)

From Popular Mechanics:

Anthony Wesley beat NASA to the punch with help from one of his super powerful hand-modded telescopes when he observed the now famous black dot on Jupiter. But even a casual stargazer can catch some of the universe's five star views with an inexpensive telescope and a curious eye. Here are five celestial beauties you can see even with your $300, 75x zoom telescope.

Read more ....

Scientists Uncork Potential Secret Of Red Wine's Health Benefits

Scientists have unraveled a mystery that has perplexed scientists since red wine was first discovered to have health benefits: how does resveratrol control inflammation? (Credit: iStockphoto/Ina Peters)

From Science Daily:

ScienceDaily (Aug. 3, 2009) — Scientists from Scotland and Singapore have unraveled a mystery that has perplexed scientists since red wine was first discovered to have health benefits: how does resveratrol control inflammation? New research published in the August 2009 print issue of The FASEB Journal, not only explains resveratrol's one-two punch on inflammation, but also show how it—or a derivative—can be used to treat potentially deadly inflammatory disease, such as appendicitis, peritonitis, and systemic sepsis.

Read more ....

Humans 2.0: Replacing The Mind And Body

U.S. Army Sgt. Juan Arredondo, outfitted with an i-LIMB after losing his hand in Iraq, says it does things naturally. The i-LIMB has flexible hydraulic drives located directly in the movable finger joints. Credit: Touch Bionics

From Live Science:

When President Barack Obama said in his weekly radio address Saturday that innovation would be a key to the future of the nation, he probably was not thinking specifically of artificial brains or replacement eyeballs.

But other researchers already have such goals in mind and are well on their way to building Humans 2.0, the real-life Steve Austin of the "Six Million Dollar Man."

Recent breakthroughs in bionics and lab-grown body parts — along with news last month that a Swiss research team aims to recreate the intricacies of the human brain within a decade — show science is rapidly creating many of the parts needed to build a fully functional human almost from scratch.

Read more ....

Five Tools To Survive the Apocalypse

Air: Filter out ammonia, chlorine or swirling toxic dust. The Advantage respirator gives a snug fit in seconds, using a harness that tightens two head-straps with a single clip. Its facepiece comes in three sizes to protect all types of people. Advantage 420 Half Mask Respirator $40; msanorthamerica.com Brian Klutch

From Popular Science:

Swine flu, nuclear tests, global warming—signs of impending doom abound. Should the unthinkable happen, the smart survivalist has two options: flee the planet or, for those of us who aren’t Richard Branson, stock up on gear that will meet your basic needs during Armageddon. If the world doesn’t end, you can always take your new gadgets camping.

Read more ....

Comet Formation Theory May Not Be Set In Stone (Or Ice)

Photo: CLOUDY ORIGINS: A comet called 2001 RX14 likely originated from a hypothesized region called the Oort cloud, far outside the planetary region of the solar system. A new model of how comets wind up near the inner planets may revise estimates of the Oort cloud's properties. Mike Solontoi/University of Washington

From Scientific American:

A new model for comet production revises the theory of their origins.

A few times a year, a visitor from deep space swings by Earth's neighborhood. Usually coming in peace, these interlopers pass by close enough to be seen, then continue on their way.

The uninvited guests are comets, streaky globules of ice and dust dislodged from one of their usual haunts far from the sun and planets: the Oort cloud. Named for Dutch astronomer Jan Oort, who hypothesized its existence in 1950, the theorized cloud is thought to contain billions or even trillions of comets that range out a few thousand to tens of thousands of times as far from the sun as Earth is. Oort cloud comets are occasionally nudged onto trajectories carrying them into the inner solar system by the passing of nearby stars or other interactions with the rest of the Milky Way Galaxy.

Read more ....

Dolphin Body Language 'Follows Human Verbal Communication'

Dolphins inspect a tiger cub at a safari park in Shenzhen, China. Scientists have discovered that the mammals' body language follows human rules of verbal communication. Photo: BARCROFT MEDIA

From The Telegraph:

Dolphin body language follows human rules of verbal communication, scientists have discovered.

As a general rule, the most frequently used words in human languages tend to be the shortest.

The same law applies to dolphins slapping their tails, diving, flopping sideways, and performing other movements when surface swimming, according to Spanish and British researchers.

Read more ....

Shake, Rattle And Roll -- Why So Few Japanese Pagodas Have Ever Fallen Down

From The Economist:


YOUR correspondent is indebted to readers for their interesting comments about last week’s column on timber-framed buildings. He is especially grateful to Anjin-san, whose observations about Japanese pagodas reminded him of a day spent a dozen years ago with Shuzo Ishida, a structural engineer at Kyoto Institute of Technology. Mr Ishida, known to his students as “Professor Pagoda”, has a passion for the building’s unique dynamics.

Read more ....

Galileo's Vision

Image: Galileo was the first to discover the moons of Jupiter. Michael Benson / Kinetikon Pictures / Corbis (Jupiter) / Scala / Art Resource, NY (Galileo)

From The Smithsonium:

Four hundred years ago, the Italian scientist looked into space and changed our view of the universe.

Inside a glass case sits a plain-looking tube, worn and scuffed. Lying in the street, it would look like a length of old pipe. But as I approach it, Derrick Pitts—only half in jest—commands: "Bow down!"

The unremarkable-looking object is in fact one of the most important artifacts in the history of science: it's one of only two surviving telescopes known to have been made by Galileo Galilei, the man who helped revolutionize our conception of the universe. The telescope is the centerpiece of "Galileo, the Medici and the Age of Astronomy," an exhibition at the Franklin Institute in Philadelphia (until September 7).

Read more ....

Integral Disproves Dark Matter Origin For Mystery Radiation

Combining more than 4 years of observations, the inner Galaxy has been mapped in the 511 keV positron annihilation line with unprecedented detail as shown above using the SPI spectrometer. For the first time, positron annihilation is found to be asymmetric in the inner Galactic disk. Consistent with earlier findings, the annihilation emission is brightest around the Galactic centre. In the sky maps, the Galactic centre is at the origin and the Galactic disk runs along the equator. (Credit: ESA/ INTEGRAL/ MPE (G. Weidenspointner et al.))

From Space Daily:

ScienceDaily (Aug. 2, 2009) — A team of researchers working with data from ESA’s Integral gamma-ray observatory has disproved theories that some form of dark matter explains mysterious radiation in the Milky Way.

That this radiation exists has been known since the 1970s, and several theories have been proposed to explain it. Integral’s unprecedented spectral and spatial resolution showed that it strongly peaks towards the centre of the Galaxy, with an asymmetry along the Galactic disc.

Read more ....

Experts Puzzled By Spot On Venus

From the BBC:

Astronomers are puzzled by a strange bright spot which has appeared in the clouds of Venus.

The spot was first identified by an amateur astronomer on 19 July and was later confirmed by the European Space Agency's Venus Express spacecraft.

Data from the European probe suggests the spot appeared at least four days before it was spotted from Earth.

The bright spot has since started to expand, being spread by winds in Venus's thick atmosphere.

Read more ....

Hacking Threat 'Exposes Every iPhone In The World' To Takeover By Criminals

'Vulnerable': Hackers could exploit a security flaw in the iPhone within two weeks and then take devices over in minutes, experts warn

From The Daily Mail:

Criminals could take control of every iPhone in the world via text message, owners are being warned.

Hackers could exploit a newly discovered flaw in Apple's handset to control its key functions - stealing data, making calls, surfing the internet and sending texts.

Security experts warn that hackers could soon hijack any of the world's 21million iPhones for identity theft and other crimes.

Read more ....

Smoothing The Way For Light

Image: Guiding light: Silver films patterned with structures like this pyramid guide light along their surface and concentrate it at the tips. This structure’s surface is very smooth, which prevents scattering. Credit: Science/American Association for the Advancement of Science

From Technology Review:

A technique makes smooth metal films for optical computing and imaging.

Researchers at the University of Minnesota have developed a cheap way to repeatedly make very smooth nanopatterned thin films. The advance could have implications for making devices--such as more efficient solar cells, higher-resolution microscopes, and optical computers--that use light in an unconventional way.

Read more ....

The U.S. Army's Solar Enewrgy Program

Acciona solar thermal plant in Nevada.
(Credit: Acciona)

Army Starts Solar Plant; Next Step: Care About Climate Change -- The Danger Room

The U.S. Army is about to start building a 500 megawatt solar thermal plant in the California desert. When it’s done, the facility will be one of the largest renewable energy plants in the world. Which is kind of ironic, since the Army doesn’t pay all that much attention to climate change. Turns out, sustainable energy is safer, said Dr. Kevin Geiss, the program director for the project.

Read more ....

More News On the Army's Solar Program

Sun power: Army unveils giant solar project -- CNET
Army Green: Ft. Irwin Has Builders for 500 MW Solar Project -- Wall Street Journal
Clark Energy hired for Defense Department solar job -- Business Journal
Army Plans 500 MW of Solar Power at Fort Irwin by 2022 -- Treehugger

Giant Pencil Traces Achaeological Finds Fast

Photo: Less pain, less staking (Image: Felix Ordonez/Reuters)

From New Scientist:

EVERY object unearthed by an archaeological dig must have its exact position recorded. This is normally a painstaking process involving measuring rods and string, but a device that uses technology originally developed to guide robots could speed up the process.

Gran Dolina in central Spain is a Palaeolithic site that contains important hominin remains which date from between 780,000 and 300,000 years ago. Thousands of fossils are discovered there every year, but registering them all by hand makes progress frustratingly slow. So archaeologists working on the site contacted Angélica de Antonio Jiménez and Fernando Seco at the Institute of Industrial Automation in Madrid, to see if they could come up with a better way.

Read more .....

New HIV Strain Leapt To Humans From Gorillas: Study

A gorilla at a park in Rwanda in 2004

From AFP:

PARIS — French virologists on Sunday said they had found a new subtype of the AIDS virus that appears to have jumped the species barrier to humans from gorillas.

The new strain, found in a woman from Cameroon, West Africa, is part of the HIV-1 family of microbes that account for the vast majority of cases of human immunodeficiency virus (HIV), they said.

Until now, all have been linked to the chimpanzee.

Read more ....

Update: New HIV strain discovered in woman from Cameroon --AP

Evidence Of Liquid Water In Comets Reveals Possible Origin Of Life

Comet Hale-Bopp. The watery environment of early comets, together with the vast quantity of organics already discovered in comets, would have provided ideal conditions for primitive bacteria to grow and multiply, experts argue. (Credit: iStockphoto/Kenneth C. Zirkel)

From Science Daily:

ScienceDaily (July 31, 2009) — Comets have contained vast amounts of liquid water in their interiors during the first million years of their formation, a new study claims.

The watery environment of early comets, together with the vast quantity of organics already discovered in comets, would have provided ideal conditions for primitive bacteria to grow and multiply. So argue Professor Chandra Wickramasinghe and his colleagues at the Cardiff Centre for Astrobiology in a paper published in the International Journal of Astrobiology

Read more ....